[C] During battles involving this, your Opponent cannot play BACKUP from hand.[A] When the Battle Opponent of this becomes Reversed, if "LET'S GO HAPPY!!" is in your Climax Zone, choose up to 1 card in your Waiting Room and return it to your Library, and shuffle your Library.[A] When this is Front Attacked, look at the top card of your Library and put it either on top of the Library or in the Waiting Room.